import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'

Vue.use(VueRouter)


const router = new VueRouter({
   routes : [
    {path:'/',redirect:'/login'},
    {path:'/login',component:Login},
    {path:'/home',component:Home,
    redirect:'/welcome',
    children:[
      {path:'/welcome',component:Welcome},
      {path:'/users',component:Users},
      {path:'/rights',component:Rights},
      {path:'/Roles',component:Roles}
    ]}
    
  ]
  
})


//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
//to要访问的路径
//from代表从那个路径跳转而来
//next是一个函数，表示放行
//next()  放行  next('/login')  强制跳转

if(to.path==='/login')  return next();
//获取token
const tokenStr=window.sessionStorage.getItem('token');
if(!tokenStr) return next('/login');//没登录
next();
})

export default router
